Mouthpiece



FIG. 1 is a front perspective view of a mouthpiece showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof, the opposite side view being a mirror image thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a rear perspective view thereof.

The broken lines immediately adjacent to the solid line disclosure represent the bounds of the claimed subject matter. The other broken lines showing the remainder of the mouthpiece in all figures represent portions of the design that form no part of the claimed design. 

CLAIM The ornamental design for a mouthpiece, as shown and described. 